Great Timer! In the state of rest, the screen does not shine, turns on when you press the button or rotate the wheel. Fast rotation-change minutes, slow rotation-change seconds in steps of 5 seconds. The signal can be turned off by pressing the button or off itself. In 60 seconds. In the state of rest if you press the button to turn on. The screen and press the button again-the stopwatch starts. By pressing the button, the stopwatch pause, press and hold-reset the stopwatch. When you start the timer and the stopwatch, the display first glows brightly, then after 5 seconds dim. Certainly recommend this timer!